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Patent name Packaging box with cups with tapered sealing flanges Patents Applicant Dalmont Inc. Principal Applicant United States California inventor J. Hunter III; T.L. Keborstein; D K. Cosgrove Application (Patent) No. 02821294.0 Application Date 2002.08.30 Certification Date Approval Notice Number 1575245 Audit Notice Date 2005.02.02 Manual CD-ROM D0505 Main Classification Number B65D17/34 Classification Number B65D17/34 Original Application The priority item is a food packaging box (30) comprising a cup (31) and a lid (32). The cup includes an opening (37) surrounded by a flange (38). The flange has a sealing surface (47) near the opening and a chamfered surface (48) disposed outside the sealing surface. The chamfered surface extends along the periphery of the flange. The sealing surface has an inner diameter (R#-[1]) and an outer diameter (R#-[2]), and the outer diameter (R#-[2]) is defined at the junction between the sealing surface and the tapered surface. The chamfered surface extends at a predetermined angle relative to the sealing surface. The lid includes a lug (53) that extends beyond the perimeter of the flange. The lid is attached to the sealing surface so as to seal the opening of the cup. The lid is not attached to more of the chamfered surface. The lid and sealing surface are adapted to disengage when a predetermined force is applied to the lug. Sovereignty Item 1. A food package comprising: a cup having an opening surrounded by a flange, said flange having a sealing surface adjacent to said opening, and disposed outside said sealing surface a chamfered surface extending along the periphery of the flange; and a cap having a lug extending beyond the periphery of the lug, the lid attached to The sealing surface seals the opening of the cup.